I don't think this is a task for calibre, or at least not calibre alone.

Formats like .mobi and .epub don't really have "pages", and so preserving the look of each page is difficult if not possible.

As I see it you have a couple options:

1) Convert the PDF pages to images and distribute mobi or ePub books made of images. This has many costs: huge file size, no searchability, no dictionary support, no reflow or zoom (though you can't have that and preserve the look anyway), but it will look exactly the same as the printed book.

2) Go back to the original source documents--not the PDF, but whatever they used to produce the PDF--and work with those. If you're working with the publisher, you should have access to those. Depending on what format they are, the route will be different. If it's, e.g., InDesign, that itself should have the ability to export to .epub...